[linux-2.6-block.git] / fs / cifs / cifs_debug.c

/*
 *   fs/cifs_debug.c
 *
 *   Copyright (C) International Business Machines  Corp., 2000,2003
 *
 *   Modified by Steve French (sfrench@us.ibm.com)
 *
 *   This program is free software;  you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or 
 *   (at your option) any later version.
 * 
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program;  if not, write to the Free Software 
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <asm/uaccess.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifsfs.h"

void
cifs_dump_mem(char *label, void *data, int length)
{
	int i, j;
	int *intptr = data;
	char *charptr = data;
	char buf[10], line[80];

	printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n\n", 
		label, length, data);
	for (i = 0; i < length; i += 16) {
		line[0] = 0;
		for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
			sprintf(buf, " %08x", intptr[i / 4 + j]);
			strcat(line, buf);
		}
		buf[0] = ' ';
		buf[2] = 0;
		for (j = 0; (j < 16) && (i + j < length); j++) {
			buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
			strcat(line, buf);
		}
		printk(KERN_DEBUG "%s\n", line);
	}
}

#ifdef CONFIG_PROC_FS
static int
cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
		     int count, int *eof, void *data)
{
	struct list_head *tmp;
	struct list_head *tmp1;
	struct mid_q_entry * mid_entry;
	struct cifsSesInfo *ses;
	struct cifsTconInfo *tcon;
	int i;
	int length = 0;
	char * original_buf = buf;

	*beginBuffer = buf + offset;

	
	length =
	    sprintf(buf,
		    "Display Internal CIFS Data Structures for Debugging\n"
		    "---------------------------------------------------\n");
	buf += length;
	length = sprintf(buf,"CIFS Version %s\n",CIFS_VERSION);
	buf += length;
	length = sprintf(buf, "Servers:");
	buf += length;

	i = 0;
	read_lock(&GlobalSMBSeslock);
	list_for_each(tmp, &GlobalSMBSessionList) {
		i++;
		ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
		length =
		    sprintf(buf,
			    "\n%d) Name: %s  Domain: %s Mounts: %d ServerOS: %s  \n\tServerNOS: %s\tCapabilities: 0x%x\n\tSMB session status: %d\t",
				i, ses->serverName, ses->serverDomain, atomic_read(&ses->inUse),
				ses->serverOS, ses->serverNOS, ses->capabilities,ses->status);
		buf += length;
		if(ses->server) {
			buf += sprintf(buf, "TCP status: %d\n\tLocal Users To Server: %d SecMode: 0x%x Req Active: %d",
				ses->server->tcpStatus,
				atomic_read(&ses->server->socketUseCount),
				ses->server->secMode,
				atomic_read(&ses->server->inFlight));
			
			length = sprintf(buf, "\nMIDs:\n");
			buf += length;

			spin_lock(&GlobalMid_Lock);
			list_for_each(tmp1, &ses->server->pending_mid_q) {
				mid_entry = list_entry(tmp1, struct
					mid_q_entry,
					qhead);
				if(mid_entry) {
					length = sprintf(buf,"State: %d com: %d pid: %d tsk: %p mid %d\n",
						mid_entry->midState,
						(int)mid_entry->command,
						mid_entry->pid,
						mid_entry->tsk,
						mid_entry->mid);
					buf += length;
				}
			}
			spin_unlock(&GlobalMid_Lock); 
		}

	}
	read_unlock(&GlobalSMBSeslock);
	sprintf(buf, "\n");
	buf++;

	length = sprintf(buf, "Shares:");
	buf += length;

	i = 0;
	read_lock(&GlobalSMBSeslock);
	list_for_each(tmp, &GlobalTreeConnectionList) {
		__u32 dev_type;
		i++;
		tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
		dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
		length =
		    sprintf(buf,
			    "\n%d) %s Uses: %d Type: %s Characteristics: 0x%x Attributes: 0x%x\nPathComponentMax: %d Status: %d",
			    i, tcon->treeName,
			    atomic_read(&tcon->useCount),
			    tcon->nativeFileSystem,
			    le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
			    le32_to_cpu(tcon->fsAttrInfo.Attributes),
			    le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
			    tcon->tidStatus);
		buf += length;        
		if (dev_type == FILE_DEVICE_DISK)
			length = sprintf(buf, " type: DISK ");
		else if (dev_type == FILE_DEVICE_CD_ROM)
			length = sprintf(buf, " type: CDROM ");
		else
			length =
			    sprintf(buf, " type: %d ", dev_type);
		buf += length;
		if(tcon->tidStatus == CifsNeedReconnect) {
			buf += sprintf(buf, "\tDISCONNECTED ");
			length += 14;
		}
	}
	read_unlock(&GlobalSMBSeslock);

	length = sprintf(buf, "\n");
	buf += length;

	/* BB add code to dump additional info such as TCP session info now */
	/* Now calculate total size of returned data */
	length = buf - original_buf;

	if(offset + count >= length)
		*eof = 1;
	if(length < offset) {
		*eof = 1;
		return 0;
	} else {
		length = length - offset;
	}
	if (length > count)
		length = count;

	return length;
}

#ifdef CONFIG_CIFS_STATS
static int
cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
		  int count, int *eof, void *data)
{
	int item_length,i,length;
	struct list_head *tmp;
	struct cifsTconInfo *tcon;

	*beginBuffer = buf + offset;

	length = sprintf(buf,
			"Resources in use\nCIFS Session: %d\n",
			sesInfoAllocCount.counter);
	buf += length;
	item_length = 
		sprintf(buf,"Share (unique mount targets): %d\n",
			tconInfoAllocCount.counter);
	length += item_length;
	buf += item_length;      
	item_length = 
		sprintf(buf,"SMB Request/Response Buffer: %d Pool size: %d\n",
			bufAllocCount.counter,cifs_min_rcv + tcpSesAllocCount.counter);
	length += item_length;
	buf += item_length;
	item_length = 
		sprintf(buf,"SMB Small Req/Resp Buffer: %d Pool size: %d\n",
			smBufAllocCount.counter,cifs_min_small);
	length += item_length;
	buf += item_length;
	item_length = 
		sprintf(buf,"Operations (MIDs): %d\n",
			midCount.counter);
	length += item_length;
	buf += item_length;
	item_length = sprintf(buf,
		"\n%d session %d share reconnects\n",
		tcpSesReconnectCount.counter,tconInfoReconnectCount.counter);
	length += item_length;
	buf += item_length;

	item_length = sprintf(buf,
		"Total vfs operations: %d maximum at one time: %d\n",
		GlobalCurrentXid,GlobalMaxActiveXid);
	length += item_length;
	buf += item_length;

	i = 0;
	read_lock(&GlobalSMBSeslock);
	list_for_each(tmp, &GlobalTreeConnectionList) {
		i++;
		tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
		item_length = sprintf(buf,"\n%d) %s",i, tcon->treeName);
		buf += item_length;
		length += item_length;
		if(tcon->tidStatus == CifsNeedReconnect) {
			buf += sprintf(buf, "\tDISCONNECTED ");
			length += 14;
		}
		item_length = sprintf(buf,"\nSMBs: %d Oplock Breaks: %d",
			atomic_read(&tcon->num_smbs_sent),
			atomic_read(&tcon->num_oplock_brks));
		buf += item_length;
		length += item_length;
		item_length = sprintf(buf,"\nReads: %d Bytes %lld",
			atomic_read(&tcon->num_reads),
			(long long)(tcon->bytes_read));
		buf += item_length;
		length += item_length;
		item_length = sprintf(buf,"\nWrites: %d Bytes: %lld",
			atomic_read(&tcon->num_writes),
			(long long)(tcon->bytes_written));
		buf += item_length;
		length += item_length;
		item_length = sprintf(buf,
			"\nOpens: %d Deletes: %d\nMkdirs: %d Rmdirs: %d",
			atomic_read(&tcon->num_opens),
			atomic_read(&tcon->num_deletes),
			atomic_read(&tcon->num_mkdirs),
			atomic_read(&tcon->num_rmdirs));
		buf += item_length;
		length += item_length;
		item_length = sprintf(buf,
			"\nRenames: %d T2 Renames %d",
			atomic_read(&tcon->num_renames),
			atomic_read(&tcon->num_t2renames));
		buf += item_length;
		length += item_length;
	}
	read_unlock(&GlobalSMBSeslock);

	buf += sprintf(buf,"\n");
	length++;

	if(offset + count >= length)
		*eof = 1;
	if(length < offset) {
		*eof = 1;
		return 0;
	} else {
		length = length - offset;
	}
	if (length > count)
		length = count;
		
	return length;
}
#endif

static struct proc_dir_entry *proc_fs_cifs;
read_proc_t cifs_txanchor_read;
static read_proc_t cifsFYI_read;
static write_proc_t cifsFYI_write;
static read_proc_t oplockEnabled_read;
static write_proc_t oplockEnabled_write;
static read_proc_t lookupFlag_read;
static write_proc_t lookupFlag_write;
static read_proc_t traceSMB_read;
static write_proc_t traceSMB_write;
static read_proc_t multiuser_mount_read;
static write_proc_t multiuser_mount_write;
static read_proc_t extended_security_read;
static write_proc_t extended_security_write;
static read_proc_t ntlmv2_enabled_read;
static write_proc_t ntlmv2_enabled_write;
static read_proc_t packet_signing_enabled_read;
static write_proc_t packet_signing_enabled_write;
static read_proc_t quotaEnabled_read;
static write_proc_t quotaEnabled_write;
static read_proc_t linuxExtensionsEnabled_read;
static write_proc_t linuxExtensionsEnabled_write;

void
cifs_proc_init(void)
{
	struct proc_dir_entry *pde;

	proc_fs_cifs = proc_mkdir("cifs", proc_root_fs);
	if (proc_fs_cifs == NULL)
		return;

	proc_fs_cifs->owner = THIS_MODULE;
	create_proc_read_entry("DebugData", 0, proc_fs_cifs,
				cifs_debug_data_read, NULL);

#ifdef CONFIG_CIFS_STATS
	create_proc_read_entry("Stats", 0, proc_fs_cifs,
				cifs_stats_read, NULL);
#endif
	pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
				cifsFYI_read, NULL);
	if (pde)
		pde->write_proc = cifsFYI_write;

	pde =
	    create_proc_read_entry("traceSMB", 0, proc_fs_cifs,
				traceSMB_read, NULL);
	if (pde)
		pde->write_proc = traceSMB_write;

	pde = create_proc_read_entry("OplockEnabled", 0, proc_fs_cifs,
				oplockEnabled_read, NULL);
	if (pde)
		pde->write_proc = oplockEnabled_write;

	pde = create_proc_read_entry("ReenableOldCifsReaddirCode", 0, proc_fs_cifs,
				quotaEnabled_read, NULL);
	if (pde)
		pde->write_proc = quotaEnabled_write;

	pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
				linuxExtensionsEnabled_read, NULL);
	if (pde)
		pde->write_proc = linuxExtensionsEnabled_write;

	pde =
	    create_proc_read_entry("MultiuserMount", 0, proc_fs_cifs,
				multiuser_mount_read, NULL);
	if (pde)
		pde->write_proc = multiuser_mount_write;

	pde =
	    create_proc_read_entry("ExtendedSecurity", 0, proc_fs_cifs,
				extended_security_read, NULL);
	if (pde)
		pde->write_proc = extended_security_write;

	pde =
	create_proc_read_entry("LookupCacheEnabled", 0, proc_fs_cifs,
				lookupFlag_read, NULL);
	if (pde)
		pde->write_proc = lookupFlag_write;

	pde =
	    create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
				ntlmv2_enabled_read, NULL);
	if (pde)
		pde->write_proc = ntlmv2_enabled_write;

	pde =
	    create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
				packet_signing_enabled_read, NULL);
	if (pde)
		pde->write_proc = packet_signing_enabled_write;
}

void
cifs_proc_clean(void)
{
	if (proc_fs_cifs == NULL)
		return;

	remove_proc_entry("DebugData", proc_fs_cifs);
	remove_proc_entry("cifsFYI", proc_fs_cifs);
	remove_proc_entry("traceSMB", proc_fs_cifs);
#ifdef CONFIG_CIFS_STATS
	remove_proc_entry("Stats", proc_fs_cifs);
#endif
	remove_proc_entry("MultiuserMount", proc_fs_cifs);
	remove_proc_entry("OplockEnabled", proc_fs_cifs);
	remove_proc_entry("NTLMV2Enabled",proc_fs_cifs);
	remove_proc_entry("ExtendedSecurity",proc_fs_cifs);
	remove_proc_entry("PacketSigningEnabled",proc_fs_cifs);
	remove_proc_entry("LinuxExtensionsEnabled",proc_fs_cifs);
	remove_proc_entry("ReenableOldCifsReaddirCode",proc_fs_cifs);
	remove_proc_entry("LookupCacheEnabled",proc_fs_cifs);
	remove_proc_entry("cifs", proc_root_fs);
}

static int
cifsFYI_read(char *page, char **start, off_t off, int count,
	     int *eof, void *data)
{
	int len;

	len = sprintf(page, "%d\n", cifsFYI);

	len -= off;
	*start = page + off;

	if (len > count)
		len = count;
	else
		*eof = 1;

	if (len < 0)
		len = 0;

	return len;
}
static int
cifsFYI_write(struct file *file, const char __user *buffer,
	      unsigned long count, void *data)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		cifsFYI = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		cifsFYI = 1;

	return count;
}

static int
oplockEnabled_read(char *page, char **start, off_t off,
		   int count, int *eof, void *data)
{
	int len;

	len = sprintf(page, "%d\n", oplockEnabled);

	len -= off;
	*start = page + off;

	if (len > count)
		len = count;
	else
		*eof = 1;

	if (len < 0)
		len = 0;

	return len;
}
static int
oplockEnabled_write(struct file *file, const char __user *buffer,
		    unsigned long count, void *data)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		oplockEnabled = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		oplockEnabled = 1;

	return count;
}

static int
quotaEnabled_read(char *page, char **start, off_t off,
                   int count, int *eof, void *data)
{
        int len;

        len = sprintf(page, "%d\n", experimEnabled);
/* could also check if quotas are enabled in kernel
	as a whole first */
        len -= off;
        *start = page + off;

        if (len > count)
                len = count;
        else
                *eof = 1;

        if (len < 0)
                len = 0;

        return len;
}
static int
quotaEnabled_write(struct file *file, const char __user *buffer,
                    unsigned long count, void *data)
{
        char c;
        int rc;

        rc = get_user(c, buffer);
        if (rc)
                return rc;
        if (c == '0' || c == 'n' || c == 'N')
                experimEnabled = 0;
        else if (c == '1' || c == 'y' || c == 'Y')
                experimEnabled = 1;

        return count;
}

static int
linuxExtensionsEnabled_read(char *page, char **start, off_t off,
                   int count, int *eof, void *data)
{
        int len;

        len = sprintf(page, "%d\n", linuxExtEnabled);
/* could also check if quotas are enabled in kernel
	as a whole first */
        len -= off;
        *start = page + off;

        if (len > count)
                len = count;
        else
                *eof = 1;

        if (len < 0)
                len = 0;

        return len;
}
static int
linuxExtensionsEnabled_write(struct file *file, const char __user *buffer,
                    unsigned long count, void *data)
{
        char c;
        int rc;

        rc = get_user(c, buffer);
        if (rc)
                return rc;
        if (c == '0' || c == 'n' || c == 'N')
                linuxExtEnabled = 0;
        else if (c == '1' || c == 'y' || c == 'Y')
                linuxExtEnabled = 1;

        return count;
}


static int
lookupFlag_read(char *page, char **start, off_t off,
		   int count, int *eof, void *data)
{
	int len;

	len = sprintf(page, "%d\n", lookupCacheEnabled);

	len -= off;
	*start = page + off;

	if (len > count)
		len = count;
	else
		*eof = 1;

	if (len < 0)
		len = 0;

	return len;
}
static int
lookupFlag_write(struct file *file, const char __user *buffer,
		    unsigned long count, void *data)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		lookupCacheEnabled = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		lookupCacheEnabled = 1;

	return count;
}
static int
traceSMB_read(char *page, char **start, off_t off, int count,
	      int *eof, void *data)
{
	int len;

	len = sprintf(page, "%d\n", traceSMB);

	len -= off;
	*start = page + off;

	if (len > count)
		len = count;
	else
		*eof = 1;

	if (len < 0)
		len = 0;

	return len;
}
static int
traceSMB_write(struct file *file, const char __user *buffer,
	       unsigned long count, void *data)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		traceSMB = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		traceSMB = 1;

	return count;
}

static int
multiuser_mount_read(char *page, char **start, off_t off,
		     int count, int *eof, void *data)
{
	int len;

	len = sprintf(page, "%d\n", multiuser_mount);

	len -= off;
	*start = page + off;

	if (len > count)
		len = count;
	else
		*eof = 1;

	if (len < 0)
		len = 0;

	return len;
}
static int
multiuser_mount_write(struct file *file, const char __user *buffer,
		      unsigned long count, void *data)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		multiuser_mount = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		multiuser_mount = 1;

	return count;
}

static int
extended_security_read(char *page, char **start, off_t off,
		       int count, int *eof, void *data)
{
	int len;

	len = sprintf(page, "%d\n", extended_security);

	len -= off;
	*start = page + off;

	if (len > count)
		len = count;
	else
		*eof = 1;

	if (len < 0)
		len = 0;

	return len;
}
static int
extended_security_write(struct file *file, const char __user *buffer,
			unsigned long count, void *data)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		extended_security = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		extended_security = 1;

	return count;
}

static int
ntlmv2_enabled_read(char *page, char **start, off_t off,
		       int count, int *eof, void *data)
{
	int len;

	len = sprintf(page, "%d\n", ntlmv2_support);

	len -= off;
	*start = page + off;

	if (len > count)
		len = count;
	else
		*eof = 1;

	if (len < 0)
		len = 0;

	return len;
}
static int
ntlmv2_enabled_write(struct file *file, const char __user *buffer,
			unsigned long count, void *data)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		ntlmv2_support = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		ntlmv2_support = 1;

	return count;
}

static int
packet_signing_enabled_read(char *page, char **start, off_t off,
		       int count, int *eof, void *data)
{
	int len;

	len = sprintf(page, "%d\n", sign_CIFS_PDUs);

	len -= off;
	*start = page + off;

	if (len > count)
		len = count;
	else
		*eof = 1;

	if (len < 0)
		len = 0;

	return len;
}
static int
packet_signing_enabled_write(struct file *file, const char __user *buffer,
			unsigned long count, void *data)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		sign_CIFS_PDUs = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		sign_CIFS_PDUs = 1;
	else if (c == '2')
		sign_CIFS_PDUs = 2;

	return count;
}


#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* fs/cifs_debug.c
	3	*
	4	* Copyright (C) International Business Machines Corp., 2000,2003
	5	*
	6	* Modified by Steve French (sfrench@us.ibm.com)
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
	16	* the GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*/
	22	#include <linux/fs.h>
	23	#include <linux/string.h>
	24	#include <linux/ctype.h>
	25	#include <linux/module.h>
	26	#include <linux/proc_fs.h>
	27	#include <asm/uaccess.h>
	28	#include "cifspdu.h"
	29	#include "cifsglob.h"
	30	#include "cifsproto.h"
	31	#include "cifs_debug.h"
6c91d362	32	#include "cifsfs.h"
1da177e4 LT	33
	34	void
	35	cifs_dump_mem(char label, void data, int length)
	36	{
	37	int i, j;
	38	int *intptr = data;
	39	char *charptr = data;
	40	char buf[10], line[80];
	41
	42	printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n\n",
	43	label, length, data);
	44	for (i = 0; i < length; i += 16) {
	45	line[0] = 0;
	46	for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
	47	sprintf(buf, " %08x", intptr[i / 4 + j]);
	48	strcat(line, buf);
	49	}
	50	buf[0] = ' ';
	51	buf[2] = 0;
	52	for (j = 0; (j < 16) && (i + j < length); j++) {
	53	buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
	54	strcat(line, buf);
	55	}
	56	printk(KERN_DEBUG "%s\n", line);
	57	}
	58	}
	59
	60	#ifdef CONFIG_PROC_FS
	61	static int
	62	cifs_debug_data_read(char buf, char *beginBuffer, off_t offset,
	63	int count, int eof, void data)
	64	{
	65	struct list_head *tmp;
	66	struct list_head *tmp1;
	67	struct mid_q_entry * mid_entry;
	68	struct cifsSesInfo *ses;
	69	struct cifsTconInfo *tcon;
	70	int i;
	71	int length = 0;
	72	char * original_buf = buf;
	73
	74	*beginBuffer = buf + offset;
	75
	76
	77	length =
	78	sprintf(buf,
	79	"Display Internal CIFS Data Structures for Debugging\n"
	80	"---------------------------------------------------\n");
	81	buf += length;
6c91d362 SF	82	length = sprintf(buf,"CIFS Version %s\n",CIFS_VERSION);
	83	buf += length;
	84	length = sprintf(buf, "Servers:");
1da177e4 LT	85	buf += length;
	86
	87	i = 0;
	88	read_lock(&GlobalSMBSeslock);
	89	list_for_each(tmp, &GlobalSMBSessionList) {
	90	i++;
	91	ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
	92	length =
	93	sprintf(buf,
	94	"\n%d) Name: %s Domain: %s Mounts: %d ServerOS: %s \n\tServerNOS: %s\tCapabilities: 0x%x\n\tSMB session status: %d\t",
	95	i, ses->serverName, ses->serverDomain, atomic_read(&ses->inUse),
	96	ses->serverOS, ses->serverNOS, ses->capabilities,ses->status);
	97	buf += length;
	98	if(ses->server) {
	99	buf += sprintf(buf, "TCP status: %d\n\tLocal Users To Server: %d SecMode: 0x%x Req Active: %d",
	100	ses->server->tcpStatus,
	101	atomic_read(&ses->server->socketUseCount),
	102	ses->server->secMode,
	103	atomic_read(&ses->server->inFlight));
	104
6c91d362	105	length = sprintf(buf, "\nMIDs:\n");
1da177e4 LT	106	buf += length;
	107
	108	spin_lock(&GlobalMid_Lock);
	109	list_for_each(tmp1, &ses->server->pending_mid_q) {
	110	mid_entry = list_entry(tmp1, struct
	111	mid_q_entry,
	112	qhead);
	113	if(mid_entry) {
848f3fce SF	114	length = sprintf(buf,"State: %d com: %d pid: %d tsk: %p mid %d\n",
	115	mid_entry->midState,
	116	(int)mid_entry->command,
	117	mid_entry->pid,
	118	mid_entry->tsk,
	119	mid_entry->mid);
1da177e4 LT	120	buf += length;
	121	}
	122	}
	123	spin_unlock(&GlobalMid_Lock);
	124	}
	125
	126	}
	127	read_unlock(&GlobalSMBSeslock);
	128	sprintf(buf, "\n");
	129	buf++;
	130
6c91d362	131	length = sprintf(buf, "Shares:");
1da177e4 LT	132	buf += length;
	133
	134	i = 0;
	135	read_lock(&GlobalSMBSeslock);
	136	list_for_each(tmp, &GlobalTreeConnectionList) {
	137	__u32 dev_type;
	138	i++;
	139	tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
	140	dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
	141	length =
	142	sprintf(buf,
	143	"\n%d) %s Uses: %d Type: %s Characteristics: 0x%x Attributes: 0x%x\nPathComponentMax: %d Status: %d",
	144	i, tcon->treeName,
	145	atomic_read(&tcon->useCount),
	146	tcon->nativeFileSystem,
	147	le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
	148	le32_to_cpu(tcon->fsAttrInfo.Attributes),
	149	le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
	150	tcon->tidStatus);
	151	buf += length;
	152	if (dev_type == FILE_DEVICE_DISK)
	153	length = sprintf(buf, " type: DISK ");
	154	else if (dev_type == FILE_DEVICE_CD_ROM)
	155	length = sprintf(buf, " type: CDROM ");
	156	else
	157	length =
	158	sprintf(buf, " type: %d ", dev_type);
	159	buf += length;
	160	if(tcon->tidStatus == CifsNeedReconnect) {
	161	buf += sprintf(buf, "\tDISCONNECTED ");
	162	length += 14;
	163	}
	164	}
	165	read_unlock(&GlobalSMBSeslock);
	166
	167	length = sprintf(buf, "\n");
	168	buf += length;
	169
	170	/* BB add code to dump additional info such as TCP session info now */
	171	/* Now calculate total size of returned data */
	172	length = buf - original_buf;
	173
	174	if(offset + count >= length)
	175	*eof = 1;
	176	if(length < offset) {
	177	*eof = 1;
	178	return 0;
	179	} else {
	180	length = length - offset;
	181	}
	182	if (length > count)
	183	length = count;
	184
	185	return length;
	186	}
	187
	188	#ifdef CONFIG_CIFS_STATS
	189	static int
	190	cifs_stats_read(char buf, char *beginBuffer, off_t offset,
	191	int count, int eof, void data)
	192	{
	193	int item_length,i,length;
	194	struct list_head *tmp;
	195	struct cifsTconInfo *tcon;
196
197	*beginBuffer = buf + offset;
198
199	length = sprintf(buf,
200	"Resources in use\nCIFS Session: %d\n",
201	sesInfoAllocCount.counter);
202	buf += length;
203	item_length =
204	sprintf(buf,"Share (unique mount targets): %d\n",
205	tconInfoAllocCount.counter);
206	length += item_length;
207	buf += item_length;
208	item_length =
209	sprintf(buf,"SMB Request/Response Buffer: %d Pool size: %d\n",
210	bufAllocCount.counter,cifs_min_rcv + tcpSesAllocCount.counter);
211	length += item_length;
212	buf += item_length;
213	item_length =
214	sprintf(buf,"SMB Small Req/Resp Buffer: %d Pool size: %d\n",
215	smBufAllocCount.counter,cifs_min_small);
216	length += item_length;
217	buf += item_length;
218	item_length =
219	sprintf(buf,"Operations (MIDs): %d\n",
220	midCount.counter);
221	length += item_length;
222	buf += item_length;
223	item_length = sprintf(buf,
224	"\n%d session %d share reconnects\n",
225	tcpSesReconnectCount.counter,tconInfoReconnectCount.counter);
226	length += item_length;
227	buf += item_length;
228
229	item_length = sprintf(buf,
230	"Total vfs operations: %d maximum at one time: %d\n",
231	GlobalCurrentXid,GlobalMaxActiveXid);
232	length += item_length;
233	buf += item_length;
234
235	i = 0;
236	read_lock(&GlobalSMBSeslock);
237	list_for_each(tmp, &GlobalTreeConnectionList) {
238	i++;
239	tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
240	item_length = sprintf(buf,"\n%d) %s",i, tcon->treeName);
241	buf += item_length;
242	length += item_length;
243	if(tcon->tidStatus == CifsNeedReconnect) {
244	buf += sprintf(buf, "\tDISCONNECTED ");
245	length += 14;
246	}
247	item_length = sprintf(buf,"\nSMBs: %d Oplock Breaks: %d",
248	atomic_read(&tcon->num_smbs_sent),
249	atomic_read(&tcon->num_oplock_brks));
250	buf += item_length;
251	length += item_length;
252	item_length = sprintf(buf,"\nReads: %d Bytes %lld",
253	atomic_read(&tcon->num_reads),
254	(long long)(tcon->bytes_read));
255	buf += item_length;
256	length += item_length;
257	item_length = sprintf(buf,"\nWrites: %d Bytes: %lld",
258	atomic_read(&tcon->num_writes),
259	(long long)(tcon->bytes_written));
260	buf += item_length;
261	length += item_length;
262	item_length = sprintf(buf,
263	"\nOpens: %d Deletes: %d\nMkdirs: %d Rmdirs: %d",
264	atomic_read(&tcon->num_opens),
265	atomic_read(&tcon->num_deletes),
266	atomic_read(&tcon->num_mkdirs),
267	atomic_read(&tcon->num_rmdirs));
268	buf += item_length;
269	length += item_length;
270	item_length = sprintf(buf,
271	"\nRenames: %d T2 Renames %d",
272	atomic_read(&tcon->num_renames),
273	atomic_read(&tcon->num_t2renames));
274	buf += item_length;
275	length += item_length;
276	}
277	read_unlock(&GlobalSMBSeslock);
278
279	buf += sprintf(buf,"\n");
280	length++;
281
282	if(offset + count >= length)
283	*eof = 1;
284	if(length < offset) {
285	*eof = 1;
286	return 0;
287	} else {
288	length = length - offset;
289	}
290	if (length > count)
291	length = count;
292
293	return length;
294	}
295	#endif
296
297	static struct proc_dir_entry *proc_fs_cifs;
298	read_proc_t cifs_txanchor_read;
299	static read_proc_t cifsFYI_read;
300	static write_proc_t cifsFYI_write;
301	static read_proc_t oplockEnabled_read;
302	static write_proc_t oplockEnabled_write;
303	static read_proc_t lookupFlag_read;
304	static write_proc_t lookupFlag_write;
305	static read_proc_t traceSMB_read;
306	static write_proc_t traceSMB_write;
307	static read_proc_t multiuser_mount_read;
308	static write_proc_t multiuser_mount_write;
309	static read_proc_t extended_security_read;
310	static write_proc_t extended_security_write;
311	static read_proc_t ntlmv2_enabled_read;
312	static write_proc_t ntlmv2_enabled_write;
313	static read_proc_t packet_signing_enabled_read;
314	static write_proc_t packet_signing_enabled_write;
315	static read_proc_t quotaEnabled_read;
316	static write_proc_t quotaEnabled_write;
317	static read_proc_t linuxExtensionsEnabled_read;
318	static write_proc_t linuxExtensionsEnabled_write;
319
320	void
321	cifs_proc_init(void)
322	{
323	struct proc_dir_entry *pde;
324
325	proc_fs_cifs = proc_mkdir("cifs", proc_root_fs);
326	if (proc_fs_cifs == NULL)
327	return;
328
329	proc_fs_cifs->owner = THIS_MODULE;
330	create_proc_read_entry("DebugData", 0, proc_fs_cifs,
331	cifs_debug_data_read, NULL);
332
333	#ifdef CONFIG_CIFS_STATS
334	create_proc_read_entry("Stats", 0, proc_fs_cifs,
335	cifs_stats_read, NULL);
336	#endif
337	pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
338	cifsFYI_read, NULL);
339	if (pde)
340	pde->write_proc = cifsFYI_write;
341
342	pde =
343	create_proc_read_entry("traceSMB", 0, proc_fs_cifs,
344	traceSMB_read, NULL);
345	if (pde)
346	pde->write_proc = traceSMB_write;
347
348	pde = create_proc_read_entry("OplockEnabled", 0, proc_fs_cifs,
349	oplockEnabled_read, NULL);
350	if (pde)
351	pde->write_proc = oplockEnabled_write;
352
353	pde = create_proc_read_entry("ReenableOldCifsReaddirCode", 0, proc_fs_cifs,
354	quotaEnabled_read, NULL);
355	if (pde)
356	pde->write_proc = quotaEnabled_write;
357
358	pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
359	linuxExtensionsEnabled_read, NULL);
360	if (pde)
361	pde->write_proc = linuxExtensionsEnabled_write;
362
363	pde =
364	create_proc_read_entry("MultiuserMount", 0, proc_fs_cifs,
365	multiuser_mount_read, NULL);
366	if (pde)
367	pde->write_proc = multiuser_mount_write;
368
369	pde =
370	create_proc_read_entry("ExtendedSecurity", 0, proc_fs_cifs,
371	extended_security_read, NULL);
372	if (pde)
373	pde->write_proc = extended_security_write;
374
375	pde =
376	create_proc_read_entry("LookupCacheEnabled", 0, proc_fs_cifs,
377	lookupFlag_read, NULL);
378	if (pde)
379	pde->write_proc = lookupFlag_write;
380
381	pde =
382	create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
383	ntlmv2_enabled_read, NULL);
384	if (pde)
385	pde->write_proc = ntlmv2_enabled_write;
386
387	pde =
388	create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
389	packet_signing_enabled_read, NULL);
390	if (pde)
391	pde->write_proc = packet_signing_enabled_write;
392	}
393
394	void
395	cifs_proc_clean(void)
396	{
397	if (proc_fs_cifs == NULL)
398	return;
399
400	remove_proc_entry("DebugData", proc_fs_cifs);
401	remove_proc_entry("cifsFYI", proc_fs_cifs);
402	remove_proc_entry("traceSMB", proc_fs_cifs);
403	#ifdef CONFIG_CIFS_STATS
404	remove_proc_entry("Stats", proc_fs_cifs);
405	#endif
406	remove_proc_entry("MultiuserMount", proc_fs_cifs);
407	remove_proc_entry("OplockEnabled", proc_fs_cifs);
408	remove_proc_entry("NTLMV2Enabled",proc_fs_cifs);
409	remove_proc_entry("ExtendedSecurity",proc_fs_cifs);
410	remove_proc_entry("PacketSigningEnabled",proc_fs_cifs);
411	remove_proc_entry("LinuxExtensionsEnabled",proc_fs_cifs);
412	remove_proc_entry("ReenableOldCifsReaddirCode",proc_fs_cifs);
413	remove_proc_entry("LookupCacheEnabled",proc_fs_cifs);
414	remove_proc_entry("cifs", proc_root_fs);
415	}
416
417	static int
418	cifsFYI_read(char page, char *start, off_t off, int count,
419	int eof, void data)
420	{
421	int len;
422
423	len = sprintf(page, "%d\n", cifsFYI);
424
425	len -= off;
426	*start = page + off;
427
428	if (len > count)
429	len = count;
430	else
431	*eof = 1;
432
433	if (len < 0)
434	len = 0;
435
436	return len;
437	}
438	static int
439	cifsFYI_write(struct file file, const char __user buffer,
440	unsigned long count, void *data)
441	{
442	char c;
443	int rc;
444
445	rc = get_user(c, buffer);
446	if (rc)
447	return rc;
448	if (c == '0' \|\| c == 'n' \|\| c == 'N')
449	cifsFYI = 0;
450	else if (c == '1' \|\| c == 'y' \|\| c == 'Y')
451	cifsFYI = 1;
452
453	return count;
454	}
455
456	static int
457	oplockEnabled_read(char page, char *start, off_t off,
458	int count, int eof, void data)
459	{
460	int len;
461
462	len = sprintf(page, "%d\n", oplockEnabled);
463
464	len -= off;
465	*start = page + off;
466
467	if (len > count)
468	len = count;
469	else
470	*eof = 1;
471
472	if (len < 0)
473	len = 0;
474
475	return len;
476	}
477	static int
478	oplockEnabled_write(struct file file, const char __user buffer,
479	unsigned long count, void *data)
480	{
481	char c;
482	int rc;
483
484	rc = get_user(c, buffer);
485	if (rc)
486	return rc;
487	if (c == '0' \|\| c == 'n' \|\| c == 'N')
488	oplockEnabled = 0;
489	else if (c == '1' \|\| c == 'y' \|\| c == 'Y')
490	oplockEnabled = 1;
491
492	return count;
493	}
494
495	static int
496	quotaEnabled_read(char page, char *start, off_t off,
497	int count, int eof, void data)
498	{
499	int len;
500
501	len = sprintf(page, "%d\n", experimEnabled);
502	/* could also check if quotas are enabled in kernel
503	as a whole first */
504	len -= off;
505	*start = page + off;
506
507	if (len > count)
508	len = count;
509	else
510	*eof = 1;
511
512	if (len < 0)
513	len = 0;
514
515	return len;
516	}
517	static int
518	quotaEnabled_write(struct file file, const char __user buffer,
519	unsigned long count, void *data)
520	{
521	char c;
522	int rc;
523
524	rc = get_user(c, buffer);
525	if (rc)
526	return rc;
527	if (c == '0' \|\| c == 'n' \|\| c == 'N')
528	experimEnabled = 0;
529	else if (c == '1' \|\| c == 'y' \|\| c == 'Y')
530	experimEnabled = 1;
531
532	return count;
533	}
534
535	static int
536	linuxExtensionsEnabled_read(char page, char *start, off_t off,
537	int count, int eof, void data)
538	{
539	int len;
540
541	len = sprintf(page, "%d\n", linuxExtEnabled);
542	/* could also check if quotas are enabled in kernel
543	as a whole first */
544	len -= off;
545	*start = page + off;
546
547	if (len > count)
548	len = count;
549	else
550	*eof = 1;
551
552	if (len < 0)
553	len = 0;
554
555	return len;
556	}
557	static int
558	linuxExtensionsEnabled_write(struct file file, const char __user buffer,
559	unsigned long count, void *data)
560	{
561	char c;
562	int rc;
563
564	rc = get_user(c, buffer);
565	if (rc)
566	return rc;
567	if (c == '0' \|\| c == 'n' \|\| c == 'N')
568	linuxExtEnabled = 0;
569	else if (c == '1' \|\| c == 'y' \|\| c == 'Y')
570	linuxExtEnabled = 1;
571
572	return count;
573	}
574
575
576	static int
577	lookupFlag_read(char page, char *start, off_t off,
578	int count, int eof, void data)
579	{
580	int len;
581
582	len = sprintf(page, "%d\n", lookupCacheEnabled);
583
584	len -= off;
585	*start = page + off;
586
587	if (len > count)
588	len = count;
589	else
590	*eof = 1;
591
592	if (len < 0)
593	len = 0;
594
595	return len;
596	}
597	static int
598	lookupFlag_write(struct file file, const char __user buffer,
599	unsigned long count, void *data)
600	{
601	char c;
602	int rc;
603
604	rc = get_user(c, buffer);
605	if (rc)
606	return rc;
607	if (c == '0' \|\| c == 'n' \|\| c == 'N')
608	lookupCacheEnabled = 0;
609	else if (c == '1' \|\| c == 'y' \|\| c == 'Y')
610	lookupCacheEnabled = 1;
611
612	return count;
613	}
614	static int
615	traceSMB_read(char page, char *start, off_t off, int count,
616	int eof, void data)
617	{
618	int len;
619
620	len = sprintf(page, "%d\n", traceSMB);
621
622	len -= off;
623	*start = page + off;
624
625	if (len > count)
626	len = count;
627	else
628	*eof = 1;
629
630	if (len < 0)
631	len = 0;
632
633	return len;
634	}
635	static int
636	traceSMB_write(struct file file, const char __user buffer,
637	unsigned long count, void *data)
638	{
639	char c;
640	int rc;
641
642	rc = get_user(c, buffer);
643	if (rc)
644	return rc;
645	if (c == '0' \|\| c == 'n' \|\| c == 'N')
646	traceSMB = 0;
647	else if (c == '1' \|\| c == 'y' \|\| c == 'Y')
648	traceSMB = 1;
649
650	return count;
651	}
652
653	static int
654	multiuser_mount_read(char page, char *start, off_t off,
655	int count, int eof, void data)
656	{
657	int len;
658
659	len = sprintf(page, "%d\n", multiuser_mount);
660
661	len -= off;
662	*start = page + off;
663
664	if (len > count)
665	len = count;
666	else
667	*eof = 1;
668
669	if (len < 0)
670	len = 0;
671
672	return len;
673	}
674	static int
675	multiuser_mount_write(struct file file, const char __user buffer,
676	unsigned long count, void *data)
677	{
678	char c;
679	int rc;
680
681	rc = get_user(c, buffer);
682	if (rc)
683	return rc;
684	if (c == '0' \|\| c == 'n' \|\| c == 'N')
685	multiuser_mount = 0;
686	else if (c == '1' \|\| c == 'y' \|\| c == 'Y')
687	multiuser_mount = 1;
688
689	return count;
690	}
691
692	static int
693	extended_security_read(char page, char *start, off_t off,
694	int count, int eof, void data)
695	{
696	int len;
697
698	len = sprintf(page, "%d\n", extended_security);
699
700	len -= off;
701	*start = page + off;
702
703	if (len > count)
704	len = count;
705	else
706	*eof = 1;
707
708	if (len < 0)
709	len = 0;
710
711	return len;
712	}
713	static int
714	extended_security_write(struct file file, const char __user buffer,
715	unsigned long count, void *data)
716	{
717	char c;
718	int rc;
719
720	rc = get_user(c, buffer);
721	if (rc)
722	return rc;
723	if (c == '0' \|\| c == 'n' \|\| c == 'N')
724	extended_security = 0;
725	else if (c == '1' \|\| c == 'y' \|\| c == 'Y')
726	extended_security = 1;
727
728	return count;
729	}
730
731	static int
732	ntlmv2_enabled_read(char page, char *start, off_t off,
733	int count, int eof, void data)
734	{
735	int len;
736
737	len = sprintf(page, "%d\n", ntlmv2_support);
738
739	len -= off;
740	*start = page + off;
741
742	if (len > count)
743	len = count;
744	else
745	*eof = 1;
746
747	if (len < 0)
748	len = 0;
749
750	return len;
751	}
752	static int
753	ntlmv2_enabled_write(struct file file, const char __user buffer,
754	unsigned long count, void *data)
755	{
756	char c;
757	int rc;
758
759	rc = get_user(c, buffer);
760	if (rc)
761	return rc;
762	if (c == '0' \|\| c == 'n' \|\| c == 'N')
763	ntlmv2_support = 0;
764	else if (c == '1' \|\| c == 'y' \|\| c == 'Y')
765	ntlmv2_support = 1;
766
767	return count;
768	}
769
770	static int
771	packet_signing_enabled_read(char page, char *start, off_t off,
772	int count, int eof, void data)
773	{
774	int len;
775
776	len = sprintf(page, "%d\n", sign_CIFS_PDUs);
777
778	len -= off;
779	*start = page + off;
780
781	if (len > count)
782	len = count;
783	else
784	*eof = 1;
785
786	if (len < 0)
787	len = 0;
788
789	return len;
790	}
791	static int
792	packet_signing_enabled_write(struct file file, const char __user buffer,
793	unsigned long count, void *data)
794	{
795	char c;
796	int rc;
797
798	rc = get_user(c, buffer);
799	if (rc)
800	return rc;
801	if (c == '0' \|\| c == 'n' \|\| c == 'N')
802	sign_CIFS_PDUs = 0;
803	else if (c == '1' \|\| c == 'y' \|\| c == 'Y')
804	sign_CIFS_PDUs = 1;
805	else if (c == '2')
806	sign_CIFS_PDUs = 2;
807
808	return count;
809	}
810
811
812	#endif